What reason is Anthurium andraeanum leaves yellowing? The leaves of Anthurium andraeanum are yellow and fall.

Anthurium andraeanum leaves yellowing, dry, rot symptoms, because of bacterial damage, spraying pepper water can not be treated, pepper water is to control insect pests, not bacteria. To remove bacteria, you can spray 0.3% solution of garlic juice, 0.2% solution of vinegar or fungicides such as carbendazim, chlorothalonil and other fungicides.

But this can not solve the fundamental problem, because Anthurium andraeanum has such symptoms, because the maintenance environment is not suitable. Anthurium andraeanum should be managed in a semi-shady, humid and warm environment, and the temperature should be between 20 and 25 degrees Celsius, not higher than 33 degrees Celsius. Otherwise, it is prone to uncomfortable symptoms; the air humidity must be between 75 and 90%, and the leaf is prone to scorch edge drying when it is less than 50%.

Fertilization should not be too thick, should be fully water-soluble fertilizer irrigated basin soil, can not be applied-like chemical fertilizer, because Anthurium can not be absorbed, will produce fertilizer damage.

What is the reason why the leaves of Anthurium andraeanum are yellow? what about the leaves of Anthurium andraeanum?

Anthurium andraeanum has a good ornamental value, it will go from beige to milky white, and finally turn green, and it will turn yellow before it withered. The flower language of Anthurium andraeanum: great ambition and enthusiasm. But what the editor is going to bring you today is about the cause of the yellowing of Anthurium andraeanum leaves and how to deal with it.

[growth habits] Anthurium andraeanum is a perennial evergreen herbaceous flower. Like warm and humid but also good drainage environment, it is afraid of both drought and strong light exposure to it. The most suitable temperature for growth is between 26 and 32 degrees, and the temperature at night is between 21 and 32 degrees, and can tolerate the highest temperature of 35 degrees and the lowest temperature of 14 degrees.

[culture method] temperature: Anthurium andraeanum is sensitive to temperature, and the most suitable temperature for growth is 14-35 ℃, the optimum temperature is 19-25 ℃, and the temperature difference between day and night is 3-6 ℃, that is, the best day time is 21-25 ℃. For a long time less than 13 ℃, although the plant will not die, but it will be difficult to restore growth for a long time; when the temperature is higher than 35 ℃ and the light is enough, the leaves are easy to burn, because the damaged leaves will not be reversed, affecting the overall quality of Anthurium andraeanum, but also create difficulties for further maintenance. Moisture: in the seedling stage, because the root system of the plant is very weak, it is distributed shallowly in the substrate and is not resistant to drought, so it should be sprayed 2-3 times a day after planting, keep the matrix moist often, urge it to draw more new roots early, and pay attention to the dry humidity of the pot substrate; plants grow fast in the middle and big seedling stage, need more water, and the water supply must be adequate; watering should be reduced during flowering, and phosphorus and potash fertilizer should be increased to promote flowering. However, the key to the success of large-scale cultivation of Anthurium andraeanum is to maintain relatively high air humidity. Especially in the high temperature season, the relative humidity of the air in the greenhouse can be increased by spraying system and atomization system. But we should pay attention not to spray the leaves in the evening, and make sure that there are no water droplets on the leaves of Anthurium andraeanum at night, so as to avoid high temperature burns on the leaves, resulting in aberration and discoloration of scorched leaves and buds. In the process of watering, dry and wet must be carried out alternately, do not water in the case of serious water shortage, this will affect its normal growth and development. In the high temperature season, it is usually watered every 2-3 days, and the sprinkler system is also used to spray water to the leaves at noon to increase the indoor relative humidity. Watering in the cold season should be carried out between 9 am and 4 pm to avoid frostbite to the roots. Fertilizer: liquid fertilizer application should grasp the principle of regular quantity, the fertilization time varies according to the climatic environment, usually from 8 a.m. to 17:00; in winter or early spring from 9 a.m. to 16:00. Each fertilization must be operated by a special person, and strictly control the dilution concentration and application amount of liquid fertilizer (mother liquor). The pH value of diluted liquid fertilizer was adjusted to about 5.7.When EC value was 1.2ms/cm, it was applied. In addition, after two hours of application of liquid fertilizer, spray water on the leaves of the plants with a sprinkler system to wash the fertilizer left on the leaves to keep the leaves clean and avoid algae breeding.

Cause and treatment of yellowing of leaves: the most likely reason for the yellowing of leaves of Anthurium andraeanum is the temperature, of course, it may also be the cause of watering and lighting. Method: move the Anthurium andraeanum outside to see that the lack of sunlight leaves will also turn yellow and the flowers will become lighter and less glossy. Now remove the yellowing leaves.

What about the yellowing of Anthurium andraeanum leaves? the causes and Solutions of Anthurium andraeanum leaves yellowing

Flower friends who have raised Anthurium andraeanum will encounter the situation of Anthurium andraeanum leaves yellowing. Here are the reasons and solutions for the yellowing of Anthurium andraeanum leaves.

The reason for the yellowing of Anthurium andraeanum leaves 1. the new supersedes the old

If it is found that when the leaves of Anthurium andraeanum are yellow, we should pay attention to the situation of other leaves. If the leaves are fresh yellow-green, and the flowers are growing well, it means that new leaves are growing, and it is normal for old leaves to yellowing and falling.

The reason for the yellowing of Anthurium andraeanum leaves 2. Soil discomfort

There are more salt and alkali in the medium and water in most areas of the north. Due to the lack of soluble iron that plants need to absorb in the medium, the leaves will gradually lose green and turn yellow.

Solution: use oxalic acid and other treatment media and water for watering flowers.

The reason for the yellowing of Anthurium andraeanum leaves 3. Too much watering

The new leaves of Anthurium andraeanum are yellow and the old leaves are normal. In general, too much water will make the medium in the basin too wet for a long time, or even stagnant water, causing some fibrous roots to rot, hindering normal breathing and absorbing nutrients, causing the leaves to turn yellow and fall off gradually.

Solution: watering normally.

The reason for the yellowing of Anthurium andraeanum leaves 4. Air drying

When the air of indoor flower cultivation is too dry in winter, the leaf tip is often withered and yellowed, or the leaf edge is scorched, or the leaf has scorched spots, edge curling and so on.

Solution: according to the growth characteristics of Anthurium andraeanum, increase the air humidity appropriately.

The reason for the yellowing of Anthurium andraeanum leaves 5. Excessive shading

If Anthurium andraeanum is placed in the shade or in a place with insufficient light for a long time, it will lead to weak growth, thin and yellow leaves, no flowering or rarely flowering.

Solution: according to the growth characteristics of Anthurium andraeanum, increase the light intensity appropriately.

The reason for the yellowing of Anthurium andraeanum leaves is 6. The temperature is not suitable

If the indoor temperature is too low in winter, the leaves will turn yellow; if the room temperature is too high, the plant transpiration is too high, and the root water and nutrients are insufficient, the leaves will turn yellow.

Solution: keep the temperature in the greenhouse relatively stable.

The reason for the yellowing of Anthurium andraeanum leaves 7. Uneven fertilization

Little fertilization, or no change of soil for a long time, lack of nitrogen and other nutrients in the soil led to thin branches and leaves, thin and yellow leaves. In addition, excessive fertilization will also lead to the thickening and uneven of new leaves, and the dry tip and scorched yellow of old leaves will fall off at the same time. At this time, we should immediately stop fertilization, increase watering, remove part of the old soil, replace it with new culture soil, and carry out normal management.